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    </style><title>Module nanohttp from libxml2</title></head><body bgcolor="#8b7765" text="#000000" link="#a06060" vlink="#000000"><table border="0" width="100%" cellpadding="5" cellspacing="0" align="center"><tr><td width="120"><a href="http://swpat.ffii.org/"><img src="../epatents.png" alt="Action against software patents" /></a></td><td width="180"><a href="http://www.gnome.org/"><img src="../gnome2.png" alt="Gnome2 Logo" /></a><a href="http://www.w3.org/Status"><img src="../w3c.png" alt="W3C Logo" /></a><a href="http://www.redhat.com/"><img src="../redhat.gif" alt="Red Hat Logo" /></a><div align="left"><a href="http://xmlsoft.org/"><img src="../Libxml2-Logo-180x168.gif" alt="Made with Libxml2 Logo" /></a></div></td><td><table border="0" width="90%" cellpadding="2" cellspacing="0" align="center" bgcolor="#000000"><tr><td><table width="100%" border="0" cellspacing="1" cellpadding="3" bgcolor="#fffacd"><tr><td align="center"><h1></h1><h2>Module nanohttp from 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documentation</a></th><td><a accesskey="h" href="../index.html"><img src="home.png" width="24" height="24" border="0" alt="Home" /></a></td><th align="center"><a href="../index.html">The XML C parser and toolkit of Gnome</a></th><th align="right"><a href="libxml-parser.html">parser</a></th><td><a accesskey="n" href="libxml-parser.html"><img src="right.png" width="24" height="24" border="0" alt="Next" /></a></td></tr></table><p>minimal HTTP implementation allowing to fetch resources like external subset. </p><h2>Table of Contents</h2><pre class="programlisting">const char *	<a href="#xmlNanoHTTPAuthHeader">xmlNanoHTTPAuthHeader</a>	(void * ctx)</pre>
<pre class="programlisting">void	<a href="#xmlNanoHTTPCleanup">xmlNanoHTTPCleanup</a>		(void)</pre>
<pre class="programlisting">void	<a href="#xmlNanoHTTPClose">xmlNanoHTTPClose</a>		(void * ctx)</pre>
<pre class="programlisting">int	<a href="#xmlNanoHTTPContentLength">xmlNanoHTTPContentLength</a>	(void * ctx)</pre>
<pre class="programlisting">const char *	<a href="#xmlNanoHTTPEncoding">xmlNanoHTTPEncoding</a>	(void * ctx)</pre>
<pre class="programlisting">int	<a href="#xmlNanoHTTPFetch">xmlNanoHTTPFetch</a>		(const char * URL, <br />					 const char * filename, <br />					 char ** contentType)</pre>
<pre class="programlisting">void	<a href="#xmlNanoHTTPInit">xmlNanoHTTPInit</a>			(void)</pre>
<pre class="programlisting">void *	<a href="#xmlNanoHTTPMethod">xmlNanoHTTPMethod</a>		(const char * URL, <br />					 const char * method, <br />					 const char * input, <br />					 char ** contentType, <br />					 const char * headers, <br />					 int ilen)</pre>
<pre class="programlisting">void *	<a href="#xmlNanoHTTPMethodRedir">xmlNanoHTTPMethodRedir</a>		(const char * URL, <br />					 const char * method, <br />					 const char * input, <br />					 char ** contentType, <br />					 char ** redir, <br />					 const char * headers, <br />					 int ilen)</pre>
<pre class="programlisting">const char *	<a href="#xmlNanoHTTPMimeType">xmlNanoHTTPMimeType</a>	(void * ctx)</pre>
<pre class="programlisting">void *	<a href="#xmlNanoHTTPOpen">xmlNanoHTTPOpen</a>			(const char * URL, <br />					 char ** contentType)</pre>
<pre class="programlisting">void *	<a href="#xmlNanoHTTPOpenRedir">xmlNanoHTTPOpenRedir</a>		(const char * URL, <br />					 char ** contentType, <br />					 char ** redir)</pre>
<pre class="programlisting">int	<a href="#xmlNanoHTTPRead">xmlNanoHTTPRead</a>			(void * ctx, <br />					 void * dest, <br />					 int len)</pre>
<pre class="programlisting">const char *	<a href="#xmlNanoHTTPRedir">xmlNanoHTTPRedir</a>	(void * ctx)</pre>
<pre class="programlisting">int	<a href="#xmlNanoHTTPReturnCode">xmlNanoHTTPReturnCode</a>		(void * ctx)</pre>
<pre class="programlisting">int	<a href="#xmlNanoHTTPSave">xmlNanoHTTPSave</a>			(void * ctxt, <br />					 const char * filename)</pre>
<pre class="programlisting">void	<a href="#xmlNanoHTTPScanProxy">xmlNanoHTTPScanProxy</a>		(const char * URL)</pre>
<h2>Description</h2>
<h3><a name="xmlNanoHTTPAuthHeader" id="xmlNanoHTTPAuthHeader"></a>Function: xmlNanoHTTPAuthHeader</h3><pre class="programlisting">const char *	xmlNanoHTTPAuthHeader	(void * ctx)<br />
</pre><p>Get the authentication header of an HTTP context</p>
<div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>ctx</tt></i>:</span></td><td>the HTTP context</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the stashed value of the WWW-Authenticate or Proxy-Authenticate header.</td></tr></tbody></table></div><h3><a name="xmlNanoHTTPCleanup" id="xmlNanoHTTPCleanup"></a>Function: xmlNanoHTTPCleanup</h3><pre class="programlisting">void	xmlNanoHTTPCleanup		(void)<br />
</pre><p>Cleanup the HTTP protocol layer.</p>
<h3><a name="xmlNanoHTTPClose" id="xmlNanoHTTPClose"></a>Function: xmlNanoHTTPClose</h3><pre class="programlisting">void	xmlNanoHTTPClose		(void * ctx)<br />
</pre><p>This function closes an HTTP context, it ends up the connection and free all data related to it.</p>
<div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>ctx</tt></i>:</span></td><td>the HTTP context</td></tr></tbody></table></div><h3><a name="xmlNanoHTTPContentLength" id="xmlNanoHTTPContentLength"></a>Function: xmlNanoHTTPContentLength</h3><pre class="programlisting">int	xmlNanoHTTPContentLength	(void * ctx)<br />
</pre><p>Provides the specified content length from the HTTP header.</p>
<div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>ctx</tt></i>:</span></td><td>the HTTP context</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the specified content length from the HTTP header. Note that a value of -1 indicates that the content length element was not included in the response header.</td></tr></tbody></table></div><h3><a name="xmlNanoHTTPEncoding" id="xmlNanoHTTPEncoding"></a>Function: xmlNanoHTTPEncoding</h3><pre class="programlisting">const char *	xmlNanoHTTPEncoding	(void * ctx)<br />
</pre><p>Provides the specified encoding if specified in the HTTP headers.</p>
<div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>ctx</tt></i>:</span></td><td>the HTTP context</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the specified encoding or NULL if not available</td></tr></tbody></table></div><h3><a name="xmlNanoHTTPFetch" id="xmlNanoHTTPFetch"></a>Function: xmlNanoHTTPFetch</h3><pre class="programlisting">int	xmlNanoHTTPFetch		(const char * URL, <br />					 const char * filename, <br />					 char ** contentType)<br />
</pre><p>This function try to fetch the indicated resource via HTTP GET and save it's content in the file.</p>
<div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>URL</tt></i>:</span></td><td>The URL to load</td></tr><tr><td><span class="term"><i><tt>filename</tt></i>:</span></td><td>the filename where the content should be saved</td></tr><tr><td><span class="term"><i><tt>contentType</tt></i>:</span></td><td>if available the Content-Type information will be returned at that location</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>-1 in case of failure, 0 incase of success. The contentType, if provided must be freed by the caller</td></tr></tbody></table></div><h3><a name="xmlNanoHTTPInit" id="xmlNanoHTTPInit"></a>Function: xmlNanoHTTPInit</h3><pre class="programlisting">void	xmlNanoHTTPInit			(void)<br />
</pre><p>Initialize the HTTP protocol layer. Currently it just checks for proxy informations</p>
<h3><a name="xmlNanoHTTPMethod" id="xmlNanoHTTPMethod"></a>Function: xmlNanoHTTPMethod</h3><pre class="programlisting">void *	xmlNanoHTTPMethod		(const char * URL, <br />					 const char * method, <br />					 const char * input, <br />					 char ** contentType, <br />					 const char * headers, <br />					 int ilen)<br />
</pre><p>This function try to open a connection to the indicated resource via HTTP using the given @method, adding the given extra headers and the input buffer for the request content.</p>
<div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>URL</tt></i>:</span></td><td>The URL to load</td></tr><tr><td><span class="term"><i><tt>method</tt></i>:</span></td><td>the HTTP method to use</td></tr><tr><td><span class="term"><i><tt>input</tt></i>:</span></td><td>the input string if any</td></tr><tr><td><span class="term"><i><tt>contentType</tt></i>:</span></td><td>the Content-Type information IN and OUT</td></tr><tr><td><span class="term"><i><tt>headers</tt></i>:</span></td><td>the extra headers</td></tr><tr><td><span class="term"><i><tt>ilen</tt></i>:</span></td><td>input length</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>NULL in case of failure, otherwise a request handler. The contentType, if provided must be freed by the caller</td></tr></tbody></table></div><h3><a name="xmlNanoHTTPMethodRedir" id="xmlNanoHTTPMethodRedir"></a>Function: xmlNanoHTTPMethodRedir</h3><pre class="programlisting">void *	xmlNanoHTTPMethodRedir		(const char * URL, <br />					 const char * method, <br />					 const char * input, <br />					 char ** contentType, <br />					 char ** redir, <br />					 const char * headers, <br />					 int ilen)<br />
</pre><p>This function try to open a connection to the indicated resource via HTTP using the given @method, adding the given extra headers and the input buffer for the request content.</p>
<div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>URL</tt></i>:</span></td><td>The URL to load</td></tr><tr><td><span class="term"><i><tt>method</tt></i>:</span></td><td>the HTTP method to use</td></tr><tr><td><span class="term"><i><tt>input</tt></i>:</span></td><td>the input string if any</td></tr><tr><td><span class="term"><i><tt>contentType</tt></i>:</span></td><td>the Content-Type information IN and OUT</td></tr><tr><td><span class="term"><i><tt>redir</tt></i>:</span></td><td>the redirected URL OUT</td></tr><tr><td><span class="term"><i><tt>headers</tt></i>:</span></td><td>the extra headers</td></tr><tr><td><span class="term"><i><tt>ilen</tt></i>:</span></td><td>input length</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>NULL in case of failure, otherwise a request handler. The contentType, or redir, if provided must be freed by the caller</td></tr></tbody></table></div><h3><a name="xmlNanoHTTPMimeType" id="xmlNanoHTTPMimeType"></a>Function: xmlNanoHTTPMimeType</h3><pre class="programlisting">const char *	xmlNanoHTTPMimeType	(void * ctx)<br />
</pre><p>Provides the specified Mime-Type if specified in the HTTP headers.</p>
<div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>ctx</tt></i>:</span></td><td>the HTTP context</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the specified Mime-Type or NULL if not available</td></tr></tbody></table></div><h3><a name="xmlNanoHTTPOpen" id="xmlNanoHTTPOpen"></a>Function: xmlNanoHTTPOpen</h3><pre class="programlisting">void *	xmlNanoHTTPOpen			(const char * URL, <br />					 char ** contentType)<br />
</pre><p>This function try to open a connection to the indicated resource via HTTP GET.</p>
<div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>URL</tt></i>:</span></td><td>The URL to load</td></tr><tr><td><span class="term"><i><tt>contentType</tt></i>:</span></td><td>if available the Content-Type information will be returned at that location</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>NULL in case of failure, otherwise a request handler. The contentType, if provided must be freed by the caller</td></tr></tbody></table></div><h3><a name="xmlNanoHTTPOpenRedir" id="xmlNanoHTTPOpenRedir"></a>Function: xmlNanoHTTPOpenRedir</h3><pre class="programlisting">void *	xmlNanoHTTPOpenRedir		(const char * URL, <br />					 char ** contentType, <br />					 char ** redir)<br />
</pre><p>This function try to open a connection to the indicated resource via HTTP GET.</p>
<div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>URL</tt></i>:</span></td><td>The URL to load</td></tr><tr><td><span class="term"><i><tt>contentType</tt></i>:</span></td><td>if available the Content-Type information will be returned at that location</td></tr><tr><td><span class="term"><i><tt>redir</tt></i>:</span></td><td>if available the redirected URL will be returned</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>NULL in case of failure, otherwise a request handler. The contentType, if provided must be freed by the caller</td></tr></tbody></table></div><h3><a name="xmlNanoHTTPRead" id="xmlNanoHTTPRead"></a>Function: xmlNanoHTTPRead</h3><pre class="programlisting">int	xmlNanoHTTPRead			(void * ctx, <br />					 void * dest, <br />					 int len)<br />
</pre><p>This function tries to read @len bytes from the existing HTTP connection and saves them in @dest. This is a blocking call.</p>
<div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>ctx</tt></i>:</span></td><td>the HTTP context</td></tr><tr><td><span class="term"><i><tt>dest</tt></i>:</span></td><td>a buffer</td></tr><tr><td><span class="term"><i><tt>len</tt></i>:</span></td><td>the buffer length</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the number of byte read. 0 is an indication of an end of connection. -1 indicates a parameter error.</td></tr></tbody></table></div><h3><a name="xmlNanoHTTPRedir" id="xmlNanoHTTPRedir"></a>Function: xmlNanoHTTPRedir</h3><pre class="programlisting">const char *	xmlNanoHTTPRedir	(void * ctx)<br />
</pre><p>Provides the specified redirection URL if available from the HTTP header.</p>
<div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>ctx</tt></i>:</span></td><td>the HTTP context</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the specified redirection URL or NULL if not redirected.</td></tr></tbody></table></div><h3><a name="xmlNanoHTTPReturnCode" id="xmlNanoHTTPReturnCode"></a>Function: xmlNanoHTTPReturnCode</h3><pre class="programlisting">int	xmlNanoHTTPReturnCode		(void * ctx)<br />
</pre><p>Get the latest HTTP return code received</p>
<div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>ctx</tt></i>:</span></td><td>the HTTP context</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the HTTP return code for the request.</td></tr></tbody></table></div><h3><a name="xmlNanoHTTPSave" id="xmlNanoHTTPSave"></a>Function: xmlNanoHTTPSave</h3><pre class="programlisting">int	xmlNanoHTTPSave			(void * ctxt, <br />					 const char * filename)<br />
</pre><p>This function saves the output of the HTTP transaction to a file It closes and free the context at the end</p>
<div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>ctxt</tt></i>:</span></td><td>the HTTP context</td></tr><tr><td><span class="term"><i><tt>filename</tt></i>:</span></td><td>the filename where the content should be saved</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>-1 in case of failure, 0 incase of success.</td></tr></tbody></table></div><h3><a name="xmlNanoHTTPScanProxy" id="xmlNanoHTTPScanProxy"></a>Function: xmlNanoHTTPScanProxy</h3><pre class="programlisting">void	xmlNanoHTTPScanProxy		(const char * URL)<br />
</pre><p>(Re)Initialize the HTTP Proxy context by parsing the URL and finding the protocol host port it indicates. Should be like http://myproxy/ or http://myproxy:3128/ A NULL URL cleans up proxy informations.</p>
<div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>URL</tt></i>:</span></td><td>The proxy URL used to initialize the proxy context</td></tr></tbody></table></div><p><a href="../bugs.html">Daniel Veillard</a></p></td></tr></table></td></tr></table></td></tr></table></td></tr></table></td></tr></table></body></html>
